Loading machine



ug. 6, 1.946. o.v G. MANDT LOADING MACHINE 5 Sheets-Shed. 1

Filed June 3, 1944 www Aug 6, 19456 o. G. Mmm 2,405,312

LOADING MACHINE Filed June 3, 1944 5 Sheets-Sheet 2 6, 1946. I Q G. MANDT 2,405,312

LOADING'MAGHINE Filed June 5, 1944 5 Sheets-Sheet 5 Aug. 6, 1946. y, o. G. MANDT LOADING MACHINE Filed June 3, 1944 5 Sheets-Sheet 4 Aug. e, 1946. o, MANDT 2,405,3l2

LOAD-[NG MACHINE y Filed June s, 1944 l 5 sheets-sheet' 5 Patented An., 194

oben a. an, Upper ln- 1 l01110, assigner t@ 'rae .neger Machine om any comme h10, acci-poration of 0h10 P n im application rune s, im, seri-a1 No. saam 261e. l This invention relates to loading machines,

having particular referenceto a loading machinef "of the type employing a portable engine-propelled base upon which is mounted an upstanding mast, and wherein use is made of poweractuated cables, trained over or along the mast, for effecting the raising and lowering of an associated material-handlingloader.

Loading machines of this category are used quite widely in operations requiring the transfer of materials, 'such as sand, gravel, ores, coal, boxes or the like, from, for example, positions of deposit on the ground to relatively elevated positions of discharge suitable for their deposit on the bodies of automotive truck vehicles, rail car or the like.

One of the objects of the invention is to provide an improved loading machine of this character wherein the mast is mounted on the; portable base for turning movement about a substantially vertically disposed anis, so that the associated scoop or other load-handling element, when in its elevated position, may turn in unison with the mast, in order that materials carried thereby may be discharged advantageously laterally to either side of the machine following predetermined lifting thereof to an elevated plane above the ground or other base surface.

It is another object of the invention to provide a loading machine for the uses indicated characterized by the simplicity of its mechanical construction, the ease by which its operation may be governed, and its'sturdy features of design by which the same is well adapted for hard usage and extended service.

For a further understanding of the invention, reference is to be had to the following description and the accompanying drawings, wherein:

Fis. 1 is a side elevational view of a loading machine formed in accordance with the lpresent invention, the material-handling scoop of the machine being shown in full lines in its lowered position and in broken lines in its elevated position of discharge;

Fig. 2 is a top plan view of the loading machine, illustrating in full lines the position of the scoop during loading thereof, and in broken lines, the discharge positions which the scoop may assume in delivering materials handled thereby to kkassociated carriers;

Fig. 3 is a front elevational view of the loading machine, disclosing the scoop in dotted lines in various material-discharging positions;

Fig. 4 is a vertical transverse sectional view,

partlyinelevation, disclosing thehdrive mechanism for rotating the -turnab1e'mest;

Fis. 5 is a horizontal sectional view taken through` the mast and disclosing its rotating mechanism,

My improved loading machine may be constructed to embody a portable base et, having a pair of forwardly located, motor driven, traction wheels 3i and a vsingle.- rearwardly disposed-l ground-engaging steering wheel et. Carried by the base or frame tt at its rear end is an intel combustion engine, or other power plant et, having the usual clutch and change-speed transmis-- sion 6d. At the front of this machine, there is provided, a material-receiving 'scoop or bucket te, the latter being provided at-the rearthereof with a bracket 68 to which is pivotally united as at di a pair of carrier arms et. These arms conform to the curvature of the rear wall t8 oi the scoop or bucket 65, so that when the ,latter occupies its lowered position, as .illustrated in Fig. d of the drawings, forward4 advance of the machine 4to effect penetration ofthe scoop or bucket into the pile of material to be gathered, will produce thrusts which will be transmitted to the arms.

' These arms in turn engage the thrust-receiving rollers 'it carried by a bracket 'il depending stationarily from the frame of the base tt.

Also, carried by the arms tt are pivoted latch detents 12, the hook-shaped outer ends of which are adapted for engagement with keeperslt stationarily fastened to the upper portions oi' the rear walls t9 of the scoop or bucket. While the de tents are in engagement with the keeper it, the bottom of the-scoop or bucket is maintained in a substantially horizontal plane, as it is when penetrating the material to be lifted or during the elevation of the material to a position of discharge. When the bucketor scoop has been elevated to such a discharge position, as shown by dotted lines in Fig. 4, the detents are rocked about their pivotal mounting on the arms te, by any suitable manual control, s o that the scoop or bucket may tilt about its pivotal connection l with the arm tt to effect gravitational discharge of the materials contained therein.

The upper ends of the arms te terminate in laterally directed :portions ld, which carry rollers it arranged for vertical movement in a pair oi? relatively spaced upstanding channel members le. Joined with these members are rearwardly converging struts l1, the latter having their inner ends secured to vertically registering collars it, whichl are fastened to the upper and lower en or a rotatable tubular column i9. This Column at its upper end is mounted for rotation within a bearing 90 provided in a frame-carried bracket Si and at its lower. end is connected with a wheel 82 formed perlpherally with-gear teeth 83 and mounted for rotation on the base frame S0.

Also mounted on the frame 90 is a drum or windlass 80 to which isfastened one end of a scoop raising and lowering cable 85. From the drum 39, the cable 85 is trained over a frame-- carried by the shaft supporting the upper sheave 81. The drum or windlass 89 is driven in any suitable manner by power derived from the engine 63, and consideration will disclose that when the drum is rotated in va direction t shorten the effective length of the cable, the carrier frame arms will be elevated and caused to move vertidotted lines in Fig. 6, the detents 12 are rocked to remove the same from latching engagement with the keeper 13.

.of said clutches.

Since the scoop or bucket is pivoted to the arms 68 in an off-center position, the lifting of the detents will cause said scoop or bucket to partially rotate about its pivotal connection 61 with the arms 88, thus enabling the bottom of the scoop or bucket to assume an angular position providing for the gravitational discharge of the materials handled thereby, in order that such materials may be deposited within the bodies of associated carrier vehicles.

To turn the mast or boom about the vertical axis pf the column 19, the gear teeth y83 of the wheel 82 mesh with a worm 9|, which is fixed on a cross shaft 92, the latter having its ends journaled in frame carried bearings 93. Loosely mounted on the shaft 92 at .one end is a gear 94, and likewise loosely mounted on the shaft 92 at its other-end is a sprocket 95. Joined with the gear 94 and the sprocket 95 are disk clutches 96 and 91, respectively, half of the disks of each clutch being fixed for rotation with the shaft 92 and the remaining alternate disks fixed for rotaclutches 95 and 91, the cross shaft 92 may be rotated in a direction to produce the desired rotation of the wheel 82 and the column 19 of the mast, so that the bucket or shovel will be swung to one side or theother of the center line of the machine.v

Conveniently the operation of the clutches 98 and 91 may be governed by the provision of a sliding clutch actuating shaft 08, which is slidably supported in bearings i 09 carried by the base frame 99. The shaft |08 may be shifted by meansof a manually operated lever H0, which is fulcrumed as at on the frame 90. The lever has pivoted thereto one end of a link i 2, the opposite end of said link being connected with a. shifter bracket i3, which is fixed to the clutch shaft |08. The bracket H3 includes a depending yoke H9,

kthe lower portion of which is received within an annular groove ||5 provided in a collar H3. loosely mounted on the worm shaft 92.

A similar shifter yoke H1 is carried by the clutchshaft |08 and engages with a collar H8 slidably mounted on the shaft 92 and adapted for engagement with the clutch 99. Each of the clutches 96 and 91 is provided with a pressure plate H9, which engages pivoted pressure pawls |20 ofthe clutches 96 and 91. The collars I6 and ||8 are formed with tapered ends which enter openings provided in pressure-applying disks |2| By these means, the worm shaft may be rotated in a direction to obtain the desired rotation of the mast or boom assembly about its vertical axis.

To prevent the mast or boom from being rotated about its vertical axis until the bucket or scoop has been suiciently elevated` so that it will assume a horizontal plane above the frame mounted elements of the machine, the clutch shaft |08 is provided with a xed socket member |22, lwith which is engaged the-lower headed end |23 of a vertically extendinglink |24. The upper end of this link is pivotally connected as at |25 to an arm |28. This arm is pivoted as at |21 on the frame of the machine and has its outer bifurcated end slotted to receive pins |29 projecting from a ring |29, the latter being received Within an annular groove provided in a vertically shiftable collar |30, which is mounted on the tubular column 19. second annular groove in which is positioned a. secondring 3|, the latter being provided with pins |32 which are receivable inl slots provided in the outer bifurcated end of a lever |33. This lever is pivoted as at |34 .intermediately of its length on a bracket |35 carried by the channel members 16. The inner end of the lever |33 is slotted to receive a pin |36 formed on a pivoted detent |31, also carried by the bracket |35. The inner end of the detent |31 is provided with a 1 semicircular socket |39 which is adapted for en- Y rollers 15 are carried.

gagement with. a cross axle |40 on which the A coil spring |4| is fastened at one end as at |42 to the detent |31, the other end of the coil spring being secured as at |43 to the bracket |35, the spring being disposed in an off center relation with respect to the' detent in order to positively maintain the latter in one position or the other of its pivotal movement.

It will be seen that when the scoop or bucket is elevated, the cross axle |40 will enter the socketed end of the` detent |31, rocking the detent 'about its pivot and causing the elevation of the collar |30 and the lifting of the link |24 so that its headedend will be removed from engagement with the socket member |42, thus permitting the clutch shaft |08 to be manually actuated to control the direction of rotation of the Iworm shaft 92. When the scoop or bucket is lowered,

The collar |30 is formed witna 54 the reverse of this operation takes place, and the link |24 is lowered to assume the full line position disclosed in Fig. 7.

In View of the foregoing, it will be seen that the present invention provides an improved loading machine for use in many industrial capacities where buik materials of various kinds are required to be elevated or transferred from one location to another. which my improved machine possesses over prior machines for similar purposes resides in constructing the mast or boom so that, in addition to supporting the associated shovel, scoop or material receiver for elevation in a vertical direction, it may be revolved about a substantially vertical axis to locate the receiver laterally of the machine when material is to be .discharged therefrom. This feature provides for greater facility in the operation of the machine and reduces the maneuvering of the portable base, as is usually necessary in locating the receiver with respect to associated vehicles or in other positions of discharge. The power-driven turning mechanism for the mast or boom is so controlled that it is locked against horizontal swinging movement when the receiver is in its lowered position, where if swung laterally, it might strike or injure stationary elements on the portable self-propelled base, thus protecting the machine against improper operation., My improved machine is further characterized by its mechanical simplicity and its ability to receive and handle heavy loads expeditiously and with complete control thereover.

I claim:

1. Portable load-handling mechanism comprising a base, a tubular column arising from said base, a vertical mast structure joined with said column for turning movement about the vertical axis thereof, a carrier frame mounted for vertical guided travel on said mast structure, a receiver A particular advantage' for materials to be loaded connected with said carrier frame, normally locked clutch controlled power-driven means for imparting turning movement to said mast structure in either direction from a centered position, a'n independently controlled. power-driven drum on said base, cable means connected with said drum and passing through said column and over said mast structure for association with said carrier frame to impart controlled raising and lowering movement thereto, and means operative automatically following predetermined elevation of said carrier frame on said mast structure to unlock the mastturning means, thereby rendering the same operative to impart controlled turning movement to the mast structure.

2. Portable load-handling mechanism comprising a base, a mast structure arising from said base, bearings carried by said hase with which said mast structure is joined for turning movement about a substantially vertical axis, a load receiver, a carrier member for said receiver associated with said mast structure for guided vertical movement with respect thereto, a cable drum mounted on said base, normally locked reversible power-driven means on said base for imparting turning movement to said mast structure, carrier frame and load receiver in either direction from a central position, independently controllable power-driven means on said base for rotating said drum, a cable connected at one end with said drum and' having intermediate portions thereof trained over said mast structure for raising and lowering engagement with said carrier member, and means operative automatically following predetermined elevation of said carrier members to release said reversible powerdriven means to admit o'f turning movement of said mast structure.

OBERT G. MANDT. 

